Airbag control unit with part number LK2T-14B321-BA

What does the airbag control unit LK2T-14B321-BA do?

The airbag control unit LK2T-14B321-BA controls the restraint system (SRS) of Ford. It evaluates the crash sensors and, in an accident, decides within milliseconds which airbags and seatbelt pretensioners are triggered.

At the same time, it monitors the system continuously and records faults in its memory. They are displayed via the airbag warning light in the instrument cluster.

After an accident the unit stores crash data and locks itself.

Why does the control unit LK2T-14B321-BA fail?

On the LK2T-14B321-BA, the most common cause is crash data stored in the unit, even if no airbag was triggered. Aged electronic components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes are further causes.

A normal diagnostic tool cannot erase crash data. It remains in the memory until Airbag24 removes it during the repair, and this also applies after an accident that happened a long time ago.

The other causes are more closely related to age and environment. Solder joints can go cold, and corrosion and moisture affect the connectors. Voltage spikes arise, for example, from a weak battery or a jump start.

How can you tell that the LK2T-14B321-BA is defective?

A defect on the LK2T-14B321-BA shows up as the airbag warning light staying on permanently or intermittently, as an error message in the instrument cluster, as a missing connection to the diagnostic tool, or as a fault memory that cannot be cleared. In a real emergency, airbags and seatbelt pretensioners may then fail to trigger.

Typical signs at a glance:

• The airbag warning light in the instrument cluster stays on permanently or intermittently.
• An error message appears in the instrument cluster.
• The diagnostic tool gets no connection to the control unit.
• The fault memory cannot be cleared.

Have such signs checked promptly. Only the readout shows whether the control unit itself is affected.

Which vehicles is the LK2T-14B321-BA fitted in?

The LK2T-14B321-BA is fitted in these vehicles: Ford Transit 7 ’14 (from 2014).

The following vehicles are assigned to this part number at Airbag24:

• Ford Transit 7 ’14 (from 2014)

Comparing the part number on the label of the removed unit with this page ensures that you have the right unit. Also have the fault memory read out. Only that result shows whether the control unit is defective or whether a plug or a cable is the cause.

For the same vehicles, we also repair control units with the part numbers BK2T-14B321-BF, BK3T-14B321-AC, DT1T-14B321-DF, KT1T-14B321-KD, LK4Z-14B321-C, LK4Z-14B321-E.

How does the repair of the LK2T-14B321-BA work?

First read out the fault memory and enclose the log. Then disconnect the battery, remove the LK2T-14B321-BA and create the repair order online. Airbag24 then checks the unit, repairs defective components and erases the crash data.

Processing at Airbag24 usually takes 3–4 working days. A function test follows, and your own unit goes back to you.

Our repairs come with 2 years' statutory liability for defects. The repaired control unit comes back with all vehicle data and is ready for use as soon as it is refitted — no coding or programming is required.

How does the control unit LK2T-14B321-BA get to Airbag24?

The unit is sent in as a parcel, or a UPS collection can be booked for an extra charge. After the repair, your own unit comes back to you by UPS from Airbag24, including the control unit LK2T-14B321-BA.

Put the printed repair order into the parcel and pack the unit shock-proof.